Air spring

Patent metadata

Field	Value
Publication number	US-9308794-B2
Application number	US-201214357864-A
Country	US
Kind code	B2
Filing date	Nov 8, 2012
Priority date	Nov 15, 2011
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

A vehicle air spring with an elastomer material air-tight tensioned air spring bellows arranged between an air spring cover and rolling piston. The air spring bellows delimiting, with the air spring cover and the air spring rolling piston, a working chamber filled with compressed air. The air spring bellows rolling away under formation of a rolling fold on the air spring rolling piston and fastening to the air spring cover under formation of a second fold, and having an elastomer element provided as an anti-roughness bearing. The elastomer element is arranged between a first and second piston part of the air spring rolling piston, the second part arranged coaxially to the first. The rolling surface for the air spring bellows is provided on the first piston part and on which the air spring bellows is fastened by a clamping element. The second piston part is mountable on a vehicle chassis.

First claim

The invention claimed is:

1. An air spring for vehicles, having an air spring bellows made of elastomeric material clamped in an airtight manner between an air spring cover and an air spring rolling piston, which air spring bellows delimits with the air spring cover and the air spring rolling piston a working chamber filled with compressed air, rolls on the air spring rolling piston while forming a rolling fold and is fastened to the air spring cover while forming a second fold, and having an elastomeric element which is provided as an anti-harshness mount, wherein the elastomeric element is arranged between a first piston part and a second piston part, coaxial therewith, of the air spring rolling piston, the first piston part and the second piston part being separate structures that are coupled together by way of the elastomeric element, the first piston part having a radially-inward facing surface and the second piston part having a radially-outward facing surface with the elastomeric element extending from the radially-inward facing surface of the first piston part to the radially-outward facing surface of the second piston part, the rolling surface for the air spring bellows being provided opposite the radially-inward facing surface on the first piston part and the air spring bellows being fastened by means of a clamping element, and the second piston part being mountable on a mounting surface of a vehicle body,
wherein the elastomeric element is made of rubber and is vulcanized between the two piston parts; and
wherein the first piston part is formed in two parts with a first and a second component, the first component being provided for fastening the air spring bellows and the rolling surface being arranged on the second component.

2. The air spring as claimed in claim 1 , wherein the second component has a radially inwardly oriented step which, for fastening to the first component, engages in a recess on an outer side of the first component.

3. An air spring for vehicles, having an air spring bellows made of elastomeric material clamped in an airtight manner between an air spring cover and an air spring rolling piston, which air spring bellows delimits with the air spring cover and the air spring rolling piston a working chamber filled with compressed air, rolls on the air spring rolling piston while forming a rolling fold and is fastened to the air spring cover while forming a second fold, and having an elastomeric element which is provided as an anti-harshness mount, wherein the elastomeric element is arranged between a first piston part and a second piston part, coaxial therewith, of the air spring rolling piston, the first piston part and the second piston part being separate structures that are coupled together by way of the elastomeric element, the rolling surface for the air spring bellows being provided on the first piston part and the air spring bellows being fastened by means of a clamping element, and the second piston part being mountable on a mounting surface of a vehicle body,
wherein the elastomeric element is made of rubber and is vulcanized between the two piston parts,
wherein the first piston part is formed in two parts with a first and a second component, the first component being provided for fastening the air spring bellows and the rolling surface being arranged on the second component, and
wherein the elastomeric element is vulcanized between two annular elements which are arranged between the second piston part and the first component of the first piston part.

4. An air spring for vehicles, having an air spring bellows made of elastomeric material clamped in an airtight manner between an air spring cover and an air spring rolling piston, which air spring bellows delimits with the air spring cover and the air spring rolling piston a working chamber filled with compressed air, rolls on the air spring rolling piston while forming a rolling fold and is fastened to the air spring cover while forming a second fold, and having an elastomeric element which is provided as an anti-harshness mount, wherein the elastomeric element is arranged between a first piston part and a second piston part, coaxial therewith, of the air spring rolling piston, the first piston part and the second piston part being separate structures that are coupled together by way of the elastomeric element, the rolling surface for the air spring bellows being provided on the first piston part and the air spring bellows being fastened by means of a clamping element, and the second piston part being mountable on a mounting surface of a vehicle body,
wherein the elastomeric element is made of rubber and is vulcanized between the two piston parts,
wherein the first piston part is formed in two parts with a first and a second component, the first component being provided for fastening the air spring bellows and the rolling surface being arranged on the second component,
wherein the second component has a radially inwardly oriented step which, for fastening to the first component, engages in a recess on an outer side of the first component, and
wherein the elastomeric element is vulcanized between two annular elements which are arranged between the second piston part and the first component of the first piston part.

Assignees

• Continental Teves Ag & Co Ohg

Inventors

• Kröger Dirk

Classifications

• B60G17/0521

  the spring having a flexible wall · CPC title

• B60G11/62 Primary

  having both rubber springs and fluid springs · CPC title

• F16F9/0454 Primary

  characterised by the assembling method or by the mounting arrangement, e.g. mounting of the membrane (F16F9/0409, F16F9/0445 take precedence) · CPC title

• F16F9/057

  characterised by the piston · CPC title